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Finding the Fourth Proportional to 372.24, 513.36 and 298.08

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Solution

The fourth proportional to 372.24, 513.36 and 298.08 is: 411.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.24 : 513.36 = 298.08 : x
  2. Step 2: Convert to fraction form
    372.24/513.36 = 298.08/x
  3. Step 3: Cross multiply
    372.24x = 513.36 × 298.08
  4. Step 4: Simplify right side
    372.24x = 153,022.35
  5. Step 5: Solve for x
    x = 153,022.35/372.24
  6. Step 6: Final answer
    x = 411.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.